In-Bed Cycling in ICU Patients Post Cardiac Surgery

2016-11-30 15:45:29 | BioPortfolio


The purpose of this study is to determine if in-bed cycling is safe and feasible in critically-ill patients after open heart surgery. The investigators hypothesize that in-bed cycling can be safely used with this population and that it is feasible to use in a fast-paced cardiac intensive care unit.


Background: Advances in medical science and technologies have lead to more effective management of critically-ill patients with a subsequent improvement in ICU survival rates. Patients who survive their ICU stay are often left with post-ICU impairments including muscle weakness and functional limitations. Cardiac surgeries are commonly performed worldwide with the majority of patients requiring post-operative ICU care. In the past decade, patients who qualify for cardiac surgery tend to be older, have a great number of co-morbidities and are more likely to require a prolonged ICU stay. The effectiveness of physiotherapy and various rehabilitation modalities in patients both pre- and post cardiac surgery has been investigated. However, to date no study specifically addresses the feasibility and safety of in-bed cycling in patients undergoing cardiac surgery who require prolonged critical care.

Principle Research Question: Is in-bed cycling a safe and feasible intervention in patients post cardiac surgery that require a prolonged stay in critical care?

Methods: Adult patients post-cardiac surgery admitted to the cardiac surgery ICU who will remain intubated and ventilated for at least 72 hours will be eligible for enrollment. Participants will receive 20 minutes of in-bed cycling plus routine physiotherapy performed by critical care physiotherapists. Patients will be enrolled for 28 days or until they are able to ambulate.

Primary Outcomes: Safety of bedside cycling will be evaluated by monitoring the number of adverse events that occur during each cycling session. Feasibility of implementing in-bed cycling into daily physiotherapy practice will be evaluated by determining if cycling sessions can be conducted at least eighty percent of the time that cycling is appropriate.

Relevance: Before conducting a larger randomized controlled trial investigating the effectiveness of in-bed cycling in the critically-ill cardiac surgery population, the safety of this intervention needs to be determined. This will be the first study in a program of research evaluating bedside cycling in the cardiac surgical ICU.

Study Design

Endpoint Classification: Safety Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment


Cardiac Disease


In-Bed Cycling


Hamilton General Hosptial
L8L 2X2


Not yet recruiting


Hamilton Health Sciences Corporation

Results (where available)

View Results


Published on BioPortfolio: 2016-11-30T15:45:29-0500

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Medical and Biotech [MESH] Definitions

A set of opposing, nonequilibrium reactions catalyzed by different enzymes which act simultaneously, with at least one of the reactions driven by ATP hydrolysis. The results of the cycle are that ATP energy is depleted, heat is produced and no net substrate-to-product conversion is achieved. Examples of substrate cycling are cycling of gluconeogenesis and glycolysis pathways and cycling of the triglycerides and fatty acid pathways. Rates of substrate cycling may be increased many-fold in association with hypermetabolic states resulting from severe burns, cold exposure, hyperthyroidism, or acute exercise.

Restoration of functions to the maximum degree possible in a person or persons suffering from a CARDIOVASCULAR DISEASE. It also includes cardiac conditioning and SECONDARY PREVENTION in patients with elevated cardiovascular risk profile.

Unexpected rapid natural death due to cardiovascular collapse within one hour of initial symptoms. It is usually caused by the worsening of existing heart diseases. The sudden onset of symptoms, such as CHEST PAIN and CARDIAC ARRHYTHMIAS, particularly VENTRICULAR TACHYCARDIA, can lead to the loss of consciousness and cardiac arrest followed by biological death. (from Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine, 7th ed., 2005)

Visualization of the heart structure and cardiac blood flow for diagnostic evaluation or to guide cardiac procedures via techniques including ENDOSCOPY (cardiac endoscopy, sometimes refered to as cardioscopy), RADIONUCLIDE IMAGING; MAGNETIC RESONANCE IMAGING; TOMOGRAPHY; or ULTRASONOGRAPHY.

Striated muscle cells found in the heart. They are derived from cardiac myoblasts (MYOBLASTS, CARDIAC).

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